Secretary of State Mary Herrera assured lawmakers Thursday that her office was prepared for the June primary election, but county clerks worry about the possible failure of memory cards in voting machines used across New Mexico.

Representatives of the state's 33 county clerks said they need extra memory cards to protect against failures during the election. The cards hold ballot information and are necessary for vote tabulators to operate.

Ballots must be hand counted — a potential source of delays in reporting the outcome of races — if tabulators aren't working.